This brand new Lenovo ThinkPad L520 42T4795 42T4794 replacement laptop battery features lithium-ion cells. Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.
You can expect about 5 - 6 hours of run time with this computer battery when new, depending on your energy use. If you would like even longer hours of run time please check out our extended run battery LEN-15XT.
Like all Li-ion primary batteries, your run time will decline over time.
This battery replaces the for Lenovo ThinkPad T420 42T4795 42T4794 series laptop batteries and a host more which are listed at the extreme bottom of this web page.